Toshiba SMMS-u MMY-MUP0801HT8 Quick Reference page 114

Combined Refrigerant Piping System Schematic Diagrams
Refrigerant Flow (Cooling)
Header Unit (MMY-MUP2401HT8-C)
Fan Fan
M M
Fan motor Fan motor
TO
PMV1
Left side Left side Left side Right side Right side Right side
TL1
Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger
TE1 TG1
TG2
TG3
Left side Left side Left side Right side Right side Right side
Sub heat exchanger
Sub heat exchanger Sub heat exchanger Sub heat exchanger Sub heat exchanger Sub heat exchanger
PMV2
TE2 TE3
PMV3
TL2
4-way valve
TS3
High-pressure
TS1
sensor
Low-pressure
sensor
Accumulator
SV3D
SV
SV3F
High- High-
SV
pressure pressure
SV
switch switch
SV41
SV42
TD1 TD2
Subcool
Heat Exchanger
PMV4
TL3
TK1 TK2
Liquid side Gas side
Service valve Service valve
TC2 TCJ TC1 TC2 TCJ TC1
Cooling Cooling
Outdoor Unit
4-way valve OFF SV3D
PMV1 Control SV3F
PMV2 Control SV4(n)
PMV3 Control Outdoor fan
PMV4 Control
Appendex- 2
Follower Unit (MMY-MUP1401HT8-C)
Fan
M
Fan motor
TO
PMV1
TG1
Main heat exchanger Main heat exchanger Main heat exchanger
TE1
TL1
TG2
Sub heat exchanger Sub heat exchanger Sub heat exchanger
TE2
PMV2
TL2
4-way valve
TS3
High-pressure
TS1
sensor
Low-pressure
sensor
Accumulator
SV3D
SV
SV SV3F
High-
pressure
SV41
switch
Subcool
Heat Exchanger
TD1
PMV4
TL3
TK1
TC2 TCJ TC1 TC2 TCJ TC1
Cooling Cooling
Control
High-pressure gas refrigerant
Condensate liquid refrigerant
Control
Evaporative gas refrigerant (Low pressure)
Low-pressure circuit (Refrigerant recover line)
Control
(38 HP system described in the example of (24 HP + 14 HP))
Control
Refrigerant Flow (Single Defrost)
Outdoor Unit (MMY-MUP2401HT8-C)
Fan Fan
M M
Fan motor Fan motor
PMV1 TO
Left side Left side Left side Right side Right side Right side
TL1
Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger Main heat exchanger
TE1 TG1
TG2
TG3
Left side
Left side Left side Right side Right side Right side
Sub heat exchanger Sub heat exchanger Sub heat exchanger Sub heat exchanger Sub heat exchanger Sub heat exchanger
TE3
PMV2
TE2
PMV3
TL2
4-way valve
TS3
High-pressure TS1
sensor
Low-pressure
sensor
Accumulator
SV3D
SV
SV3F
High- High-
SV
pressure pressure
SV
switch switch
SV41
SV42
TD1 TD2
Subcool
Heat Exchanger
PMV4
TL3
TK1 TK2
Liquid side Gas side
Service valve Service valve
TC2 TCJ TC1 TC2 TCJ
Cooling Cooling
Outdoor Unit
4-way valve OFF SV3D
PMV1 Control SV3F
PMV2 Control SV4(n)
PMV3 Control Outdoor fan
PMV4 Control
7
TC1
High-pressure gas refrigerant
Condensate liquid refrigerant
Control
Evaporative gas refrigerant (Low pressure)
Low-pressure circuit (Refrigerant recover line)
Control
Control
Control